The uniqueness wore off. Like everything else, it was just evolutionary.
Second British Invasion (apex)
rock and roll
The "British Invasion" occurred in the 1960s, and was a reference to the popularity of the Beatles. Iron Maiden came about well after that. They were, however, a part of the New Wave of British Heavy Metal.
Beatles
Pop music.
Trafalgar
The Naval battle at Trafalgar.
Second British Invasion (apex)
Invasion Iowa ended on 2005-04-01.
Invasion America ended on 1998-07-07.
British Invasion LA - 2014 was released on: USA: 2014
ended with the Soviet invasion of Afghanistan.
The British commander who lost the Battle of Saratoga was John Burgoyne.
The Beatles appearance on The Ed Sullivan Show is generally considered to have kicked off the British Invasion.
rock and roll
Invasion - TV documentary - ended on 2001-11-11.
The Mongolian invasion